Glass-drawing mechanism.



l n. L. FRINM GLASS DRAWING WlCHAIJISIV@v AP'PucATioN F|LED MAR. 25. 19092 l f Patented Dec; 28, 1915.

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B. L. FRINK. GLASS DRAWINQ MEcHANlsM.

APPLICATION HLD MAR. 25.-19o9. L., f Patented Dec. 28, 1915.

,. IN' MMI B. L. FRINK. GLASS DRAWING MECIIAIIISIII. APPLICATION FILED MAR. 25. |909.

Patented Dec. 28,1915.

LII- @Af-I2 I 1 I IZ R. L. FRNK.

GLASS DHAWLNG MECHANISIVI.

V APPLICATION FILED-M`AR.25,1909. l LLH. l Patented Dec. 28, 1915.

L il? nonnnr Vit. rncmr., or CLEVELAND, onto.

y Guss-DRAWINQ .MECHANISl-Wl.

niet, 1125..

Speciiicaton of Letters Patent.

Application led March 25, 1909. Sera1No.l85,677. l

To all 'whom it may concern: y

Be it known that l, ROBERT L. FRINK, a citizen of the United States, and a resident of Cleveland, .county of' Cuyahoga,` and 5 State 'of Ohio, have invented a new and use-.

. ful Improvementlin Glass-Drawing Mechanism, of which the following is a specifica? l' tion, the principle of the invention being herein explained'and the best mode in which l lhave contemplated applying that principle, so as to distinguish it from other inventions. Y

The object of the present invention is primarily the provision ofjsuitable apparatus l5, adapted to utilize the method ofl drawing vglass set forth in my-issued Patent No. 846,102, dated March th, 1907, with rotatable drawing pots. Incidentallyl the means thus provided are by slight modifica-v /tion adapted for'us'e in -an improvement in 4Q means constituting, however, but vseveral of the various mechanical forms in which the' such method set'fcrth in -aco-pending application vfiled November 27, 1908, No. 464,654,1ooth such" processes being characterized by having fluid pressure connections to" the interior of the cylinder through the Thejannexed c lrawings:` and the following description set forth in detail certain mechanism embodying the invention, such disclosed principle of the invention may be used.

In said annexed drawings: Figure 1 is a partial side elevation land partial section of a continuous cylinder drawing plant wherein have been incorporated theseveral improvements constituting my present invention; Fig..2 is a sectional Vview of a portion of the apparatus'of suchplant taken on a ldifferent plane from that of.Fig. 1; Fig. 3 is a plan view'of the apparatus; Fig. 4 illustrates, partially inside elevation and partly in section, the adaptation ofsuch present invention tothe improved structure of the `nso-pending application referred to; Figs. 5

and 6 respectively illustrate in plan and side i elevation the` improved 'construction of `drawing mechanism above referred tol and Fig. 7 is a detached view of one of the rais-` ing and lowering devices for the. 'gripper The construction of pot, shown in two slightly diHerent forms in connectipnwith the apparatus of Figs. 1,-2' and 3 andl that of Figi-1, is not Vpresented as a part of the .present invention, being fully set` forth in ianother cri-.pending application andA February rr, 1908,:- erial.- No. 416,230.

" As a matterfoffactt-he dare three .such

drawing potsfitr "provided ineonnection 'with such first apparatus', ,thesefpots' being carratentea nee.. aie; mit..

ried in the outer-endsof the radia'tingarmsV b of af'frame B 'rotatablymounted upon a Asuitable pedestal BQ. The latter is provided with anupwardly projecting studr shaft b surrounded with' a ball thrust-bearing b2, which shaft forms the axis of the frame. The arms of the frame iii' its approved form comprise simply two parallel beams or channels-between 4which thedrawing pots, proper are held. Each of the latter, as will be evident from an inspection of the-several views of the same, consists of van exterior metal jacket a-within which, and spaced therefrom, is supported a vessel a of clay or other suitable refractory-material wherein the molten glass is designed to be retained.

ln the spaceI intervening between vessel a and-jacket a, is provided a layer a2 of minleral wool, asbestos or like material, which serves to thoroughly insulate the vessel from;

the' chilling influence -of the atmosphere.

Centrally mounted in each pot, is a tubular support or duct A that bears at its upper' end the drawing head as, characteristic of apparatus employed in carrying ou't my iinproved method of drawing glass. method consists, briefly stated, in passing the cylinder, or rollen being drawn, between rollers C located above the drawing lstation and rotating in proper direction to draw suchV cylinder upwardly around drawing head a3 once it has been started. The

latter, acting in conjunction with an air supply `that is furnished therethrough, automaticallyregulates the .diameter of the cylinder thus drawn, the length of the cylinder being limited only by the quantity of glass available in the pot. Heretofore such pot,

has been shown as stationary with'suitable passa" .es orfY ways connectngith'ef saine* an aacnt" glass 'melting' `fiirnace"from which metal could be 'continuouslysupplied" to take the place of that" removed -froir' the?" present i apparatus has beenl devised. The

I ij'ame B, accordingly, that has beenl seen to snp ort the three pots AA, is designedto b e rotated so as tol successively bring each of said pots beneath the discharge end of a passage o,1 conduit D, whereby molten glass may Ibe directly supplied thereto from the fur'- naej, thento ,bring such-pot in proper alinement ywith the drawing apparatus at the drawing station, and finally, in anintermediate, position between thetwo yjust referred to, to 4bring such. pot in operative relation to suit-abile' means for melt-ing down the accuinulatron of congealed metall orglass Within tl'ie' .p, o t, which it is desirable should be reduced to a liquidstate before proceeding withfthe admission of a fresh charge of m al, and the subseqstmnt Adrawing of the finte, another cylin`der.

,ile charactciof the drawing mechanism, aslalso that of the means provided for supplying 1nolten glass tothe apparatus, has already-' .been zsuliiciently indicated; for melting. down the congealed glass in the pot when in `its thirdposition, a hood E is pro- Yvided beneath which it is adapted to be then or drawing about the ams of the frame, it will be obvilocated.y iVith this hood are connectedsuit.- able heatingineans in the form of burners c or the like, ,whereby the interior of the vesselv may be heated, and the accumulation of selidied glass may" be melted down prepfr'aLtory to filling-the vessel with afresh supply of metal. There being three vessels pots equidistantly disposed that one ofthe same is at all'tixnes positioned Iin operative relation tothe supply passage l), the .drawing mechanism C and such melting hood E, so that the general operation is continuous save for the slight interruption incidental to the shifting of a freshly filled pet around to the drawing station to tal-:e the place of one that has j'ustrbeen emptied. l

The drawing pots are desir-ably made of a considerably larger capacity than has heretofore prevailed, when such pots have been rotatably mounted in a fashion analogous to that just described. l accordingly providea circular track or lway B2 loncentric with respect to the axis of frame B, and mount said pots upon trucks A2, so that the burden of their weight is supported on said seen rises centrally within each'pot to supi A port the' drawing-head a3, terminates a short distance belowl the bottom of said pot so as to leave the latter free to-,bel moved around upon the track or way- B3, ,in the fashion ju'st described. Intwopositionsof the pot, namely when' filled with glass from the tank and when beingmelted down after the `drawing operation,the hea-d is not in use,

but inconnection with the dra-Wing operation, it is necessary that air -be supplied thereto in order to, properly maintain the diameter of the cylinder, in accordance with the method already 'referred to. I accordingly provide separable air supply connections for said tubular support adapted to 'be connected therewith when the pot is located in operative position below the drawing mechanism. Details of the supply mechf anism proper need not be noted further than to remark that they consist of a supply duct or pipe el, a drum d laterally connected with such supply pipe, and a blower D3 havingits 4delivery pipe (l extending through said drum and opening laterally into the same. `il'veighted escape valves (Z3 (Z4 are provided for the upper end of the blower delivery pipe and for an opening in the vdrum d located kin its side substantially opposite the supply piped. 'llheapcrture in the latter is regulated by a slide, or gate, valve (Z5. Thisair supply mechanism likewise, is not presented as apart of the present invention, heilig fully sct up and-clai1ned in my pending application filed July 24, 1908, Serial No. 445,077, the 'function of such mechanism being to supply a substantially constant volume of air to the portion of the cylinderlying between the level of glass in the pot and the drawing head o. upon the upper end o f the tubular support A. For effecting connection between this supply mechanism and successive pots of thc series borne by frame B, a pipe section d is connected lwith the outer end of the supply pipe. such section being pivotally mounted and being upturned at its upper 0nd, so that, when raised, it Iis adapted to contact with the lower end of the tubular drawing head support, which projects downwardly through the bottom of the pot.V Resilient means, as a compression spring (Z7, serve to malte and retain this connection a secure one, while a` pedal (ZS affords convenient' means for the operator in charge to break such connection -whenever it becomes desirable to do so, as

upon the shifting of the apparatus to bring another pot into the position for drawing.

intense 'rhs ap mais illustrated in Fig. 4, aside from the act that it includes but two drawinglpots A (into which'the glassis intended to be supplied byladling),- is urther differ-' entiated from the apparatus thus far dis-l cussed, by `supplying the vair,lutilized in maintaining the diameter or distending the cylinder, `from above. The drawing operation being' of thev discontinuous character, necessarily involved in the handling of a liinited quantity of glass, a single 'cylinder or roller of relatively short length is produced by each operation. A further distinction consists "in the use of a valve 7","automati-4 cally operated by manometric meansF, connected with a-pip'e or duct F', that leads to the cylinder portion to which Atheair is-A being supplied. The supply mechanism,

proper, does not di'er frointhat previously described, othei` than that a valve f of the liquidl seal type isssubstituted for the .v slide valve Z in order that' operation there-p of'may be as frictionless as possible.

For operating the manonieter a duct requires to be passed unwardly through the bottom of they drawing pot so as to extend above the level of the glass in such pot, and thus transmit fluctuations in the pressure within the cylinder to the nianometer. 'In

order to permit of the movement of the pots, supported in--the manner previously described, the connection betweenthe mam portion j3A of such duct and the portion 7'* thus seen to extend upwardly throughthe bottom of the pot is made a separable one. A pivotally mounted pipe section f5 is then utilized as before, such ,section having an upturned end adapted in raised position to contact with the'lower end of the duct portion f4 carried by the pot. Resilient means f serve to make and retain this connection "this substitute drawing mechanism consists of a pair of alternately operative gripping devices H, each made up of tivoo-r more bands h conforming to the curve of the cylinder but not quite equal, in. their combined extent` to the circumference of such cylinder. Eachset of gripping bands is adapted to be raised l,and lowered by means of vertically vreciprocable members h having their lower ends connected with said bands byV means of stout cords 71.9, or like flexible connections, passing around buttons or rollers h2 mounted near the contiguous edges ,of said bands so as to tend to draw the latter together whenever any pulling strain is imparted to said connections. Members la. are given their reci-procatory movement by meansv of mutilatedpinions h3 that mesh with racks h4 wherewith said members are provided.A .By means of suitablyA interbeing tiinedto lrise while the other falls. Sincethe fallingv movement is much the more rapid, it will be evident thatfa continuous pull may be excited upon the cylinder without hitch or let up in drawing operation. Moreover, the elect of the lslight momentum acquiredv bythe bands in their Afall serves to cause them to grip'the cylinder 'atV once, and that quite tightly, tipon the limit of their downward movementI `geared shafts h5 provision is made to rotate y 'the mutilated pinion, so that the pairs of members rise and fall alternately, one pair being reached. ,ll have also taken occasion to illustrate in Figs. ,5 and 6 an l'inng'iroved construction of capper, or cylinder sever!A ing device H', that, while particularly thus limited in its use. Such "capper comvadapted Jfor use in connection with the foren Vgoing drawing device, is not necessarily prises simply two curved arms 7L, suitably.

supported upon one of the reciprocable members' la. and provided with: handles k7, whereby their free ends may be broughttoy gether. Such members are not designed, when thus closed around the cylinder, to contact therewith, but a loop hs4 lof wire, or like conductor, carried by the arms, is adjusted so as to close in upon such cylinder.

This loop being a part. of an electric circuit, a current may be passed therethrough until a suiiicient temperature is developed to cause the glass to crack, -thus severing from the body of the cylinder the portion` lying above the plane of the cappeiz Such severed section may be removed in any desired fashion; mechanism for this purpose` however, is not illustrated.

Other modes of Aapplying; the principle of mv invention may be employed instead of los` iio

the one explained, change being made as regards the mechanism herein discloscd,/ provided the means stated by any of the following claims or the equivalent of such Stated means be employed.

I therefore particularly point out and distinctly claim as my invention 1.111 mechanism of the class described, the combination of cylinder-drawing apparatus; a movable support; a plurality of pots carried by said support and adapted to,

be successively brought into operative posi tion With respect to said drawing apparatus, eachof said pots being providedv with a duct rising upwardly so as to extend within a cyl'- inder being drawn from said pot; andan air-supply pipe adapted to be detachabiy e-with;faerepecave ducts iii-Said 'the-latter are successivelymo'ved into Pots i Asuoli" operative-position:

2. Ing` mechanisml of-the class described, the lcofi'nbination of* cylinder-drawing apparatusgfa rotatable support; a plurality of -pots-carried-byf said'support and adapted to be successivelybrought into operative position beneathlv said drawing apparatus, each i of said potsfbeingprovided with a duct risingsupwardly so aste extend within a cylind'er being drawn from said pot; and an air-supplyl pipeadapted to be detachably connected with thefrespective ducts in said pots as theA latter are successively moved into such operative position.

3; In mechanism of the class described, the combination lof ycylinder-drawingapparatus;` a movable support; a pluralityof pots carried by said support and adapted to be successively brought into operative position with respect tosaid drawing apparatus,

Aeach of said pots being provided with a duct -rising upwardly so as to extend within a cylinder being dra'wn fronisaid pot;- and an air supply pipe adapted to be detachably connected with the respective ductsin said pots as the latter are successively moved into such operative position, said air-supply pipe and'ducts being formed withL complementary 1convex and concave -engaging faces adapted toautomatically locate the corresponding potl in drawing position.

et. I n mechanism of-the class described, the, combination of cylinder-drawing apparatus; 4a rotatable support; a plurality of pots carried by said support and adapted to be successively brought into operative position beneath said drawing apparatus, each of said .pots being provided with a duct ris-` ing upwardly so as to extend within a cylinder being drawn i'rom said pot; and an air-supply pipe adapted to be detacliably connected with the respective ducts in sai-d pots as the latter are successively moved into such operative position, said air-supply pipe being formed with a convex face and each of said ducts with a complementary concave face adapted to engage with the face of said air-supply pipe to automatically locate' thecorresponding pot in drawing position.

In mechanism ofwthe class described,

'the combination of cylinder-drawing apparatus; a` movable support; a plurality-of kpot-s carried by said support and adapted to `and ducts being relatively movable in a direction-transverse-ofjthe planex of movementoifsaid'pots-l 6. AIn mechanism of the class described, the combination of cylinder-drawing apparatus; a movable-support; a plurality of potscarried by said support and adapted to be successively brought into operative position with respect to said drawing apparatus, each of said pots being provided with a duct rising upwardly so as to extend within a cylinder being drawn from said pot; an airsupply'pipe adapted to be detacliably connected with the respective ducts in said pots as'l the latter are successively moved into such operative position, said air-supply pipe and ducts being relatively movable in a direction transverse of the plane of movement of said iets' and resilient means tendinr to mainl a h tain said air-supply pipe and selected duc't in conneetionfwith each other. p

7. In mechanisnrof the class described, the combination of cylinder-drawing apparatus; a movable support; a plurality of pots carried by said support and adapted to be successively lbrought into operative position with respect to said drawing apparatus, each of said pots being provided with a duct rising upwardly so as to extend within a cylinder being drawn from said pot; and an Iair-supply pipe adapted to bc detachably connected with the respective ducts in said pots as the latter are successively moved into such operative position, said air-supply pipe and ducts being relatively movable in a direction transverse of the plane ot' movement of Said pots and having their engaging faces complen'ientarily inclined.

8; In mechanism or the class described, the combination of cylinder-drawing appaiatus; a movable support; a plurality of pots carried by said support and adapted to be successively brought into operative position withrespect to said drawing apparatus, each of said pots being provided with a duct rising upwardly so as to extend within a cylinder being drawn from said pot; and an air-supply pipe adapted to be detachably connected with the respective ducts in said pets as the latter are successively moved into Such operative position, said air-supplyvpipe and du'cs being relatively movable in a direction transverse of the plane of movement of said .potsand having their engaging faces of complementary convex and concave form.

9. In mechanism of the class described, the combination ot' cylinder-drawing apparatus; a movable support; a plurality oi pots carried by .said support and adapted to be successively brought into operative position with respect -to said drawing apparatus, each of said pots being provided with a duct rising upwardlv so as to extend within a cylinder being drawn from said pot: an'air-supply pipe adapted to he detachably connected with the respective ducts in z said.

pots as the latter are successively moved intol .such operative position, said air-supply pipe and ducts'beingl relatively'movahle `a1'di-.

` rection transverse ofthe planetofmovement of said pots and having theirfengagingfaces of complementary convex fand" concave form andresihent means tenqdlngfto maintain saldiv l air-supply pipeandselected duct in connection with'veach other. f y* t'- .'iratus; a-movable support; a lplurality of potsl carried by said support and adapted to be successively brought into operative position withv respect to said drawing apparatus, each of .said pots being provided with a duct rising upwardly so as to extend within a cylinder being-'drawn from-said lpot; and a movable, resiliently. supported air-supply pipe adapted -to loe detachably connected with the respective ducts in said pots as the latterare successively moved into suchl operative position.

l1. ln mechanism classl described,

the con'ibinatiiiv 'of cylinder-drawing appaf ratus; a 4rotatable support; alurality oi' 'pots carried by said support-faI ,fjadapted to bey successively brought mtofoperative posi- .v S0 tion beneath said' drawin' tapparatus, each of said potsbeing provide with va duct risingnpwardlyso as to'eixtend within a cylinder being ,'lrawnl from said pot; a movable. air-supply pipe adapted to be detach.- ablypconneoted with the respective' ducts-in said Ipots as the latter are successively 'moved into such operative position; and. resilient means adapted tosupport said pipe thus in connection with a duct.

12.' In' mechanism of the class described, the combination of cylinder-drawing apparatus; a' rotatable support a pluralitylof pots carried by said'support and ,adapted to be successively brought into operative positionbeneath said drawing apparatus, each 'of said pots being Provided with'a duct ris- .ing upwardly s o as to extend within a cylinder being drawn from said'pot; agmovable air-supply pipe adapted to bel detachably connected with-the respective ducts in said pots as the latter are successively v-moved into such operative position; and: resilient means tending to. support said p1pe' with its upper end in a position above the lane of movement ofthe lower ends of sald ducts, such upper end of said air-supply pipe and the lower endsof said ducts having comple-- mentary inclined engaging faces.

1S.v In mechanism' of the class despribed,

.the combination of cylinder-drawing 'appa- I'atus; a rotatable support; a1 plurality of pots-.carried by said support and adapted to esuccessi'vely brought into operative posi- 'tion beneath said drawing-apparatus, each 'te of said pots being provided Vwith a duct ris-f,

.into operative relation with sai ing upwardly v'so as to extend within a cylinder being drawn from said pot; Va' ,movable air-supply pip adapted to lbe detachably.- connectedv wit the respective ducts iigsaid pctsas the latter are successively moved into" o such operative position; and resilient means tending to nsupport said'pipe with its -upperend in` a position above the vplane of movement of theftlowerends' of said duct's,'such .A. s upper endoi said air-supply pipeand the 75 i .10. In 'mechanismA of the 'class described," the combination of cylinder-'drawing appa-t lower ends of 4said .ducts having complementary convexand concave engaglng `faces adapted to automatically Vlocate the fcorrespending pot .in drawing position. y

14. ln glass drawing mechanism, the com- 80 bi-nation -with a conduit for supplying mol-` f rotatable about an axis passing through such point; three pots borne by said support and adapted to be successivel brought i dy conduit, rolls, and heating means upon rotation of saidV support; a centralduct in each of said 9o pots rising upwardly so as to extend within a cylinder being drawn from said pot; a drawing head surmounting each such duct; and a relatively ixed pressure-supply duct terminating adj acent'to the drawing station 95 and adapted to be connected with the duct borne by the pot there located.

15. In glassdrawing mechanism,the comqbination with a conduit for supplying mol.- ten glass, drawing lmeans, and heating means symmetrically-disposed about a central point ;-.of a support rotatable about'y an axispassing vthrough such point; a plurality of pots borne by said support and adapted to be successively brought into op# erative relation with ysaid conduit, drawing means, and heating means upon rotation of said support; a duct in each of said pots rising upwardly so as to extend within a `cylinder being drawn from saidl pot; a relatlvely iixed exterior duct terminating adjacent to the drawing station; and a movable section forming the end of said eX- A` terior duct and adapted,'in raised position, l

to connect the-same with the duct borne by llt a pot located thereover'. i

' 16. ln glass drawing mechanism, the combination with a conduit for supplying molten glass, drawing rolls, and downwardly directed heating means symmetrically disposed about a central point; of. asupport rotatable about an axis passing through such point; three potsborneby said support and adapted to be successivelybrought into operative relation with said conduit, 1M

rolls, and heating means upon rotation of said support;jacentral duct in each of said pots-rising upwardly so as to extend within i a cylinderbeing drawn from said pot; a

drawing head surmounting each such duct; It@

adapted,` in raised -position to connect the.'

same vwith the duct borne by a .pot located thereover.

17. In glass drawingmechanism, the oon ,binatlonnvlth ascondultfor supplying Inolten glass, drawing` rolls7 and downwardly dirented heating means symmetrically disposed about a .central-point; oa support rotatable about an.;aXis passing through such point, three ypots borne'by said support and adapted .tobesueoessively brought into oper-atrerelation with said conduit, rolls,.and heating means upon. rotation of said snpmemes port; a central duet in each of said pots rising` ,upwardly so as to extend within a cylinder \being ,drawn from said pot; a drawing head surlnounting each such duet; a relatively. {ixedexterior pressure-supply duct terminating adjacent to the drawing station; apivotally mounted section forniing the end of said exterior duct and adapted, in raised position, to connect the saine with the duet borne by a pot located thereover; and resilient means normally thus raising ,said duct section.

Signed by me this 6th day of March, 190).

fROBERT L. FRINK. 

